Three inorganic-organic hybrid nanoclusters of copper and cobalt containing arsenotungstates with lone pair on heteroatom have been synthesized under mild reactions conditions. All the compounds have been characterized by single crystal X-ray diffraction, Fourier transform infrared, UV/visible spectroscopy, thermogravimetric and field emission scanning electron microscopic (FE-SEM) analysis. The compound [NaRb{Cu(phen) (H₂O)₂Cl}₂][{Cu(phen)(H₂O)}₂{Cu(phen)(H₂O)Cl}₂{Cu₂As₂W₁₉O₆₇(H₂O)] (1a) is a sandwiched type arsenotungstate with two copper atoms in square planar environment in the belt region. The polyanion-1 is decorated by four copper phenanthroline complexes through a terminal oxygen atom of the polyanion. In addition, two other cobalt containing inorganic-organic hybrid lone pair containing arsenotungstates(III) with 1,10-phenanthroline [NaRbCo(phen)₃][{Co(phen)(H₂O)₃}CoAs₂W₂₀O₆₇(H₂O)₃] (2a) and 2,2’-bipyridine[Na₃RbCo(2,2-bipy)₃][CoAs₂W₂₀O₆₇(H₂O)₃] (3a) has also been synthesized under mild conditions. The polyanion (2) is a mono cobalt substituted sandwiched type structure that is decorated by a cobalt phenanthroline complex attached to the polyanion through a terminal oxygen atom. Meanwhile the other complex (3) is also a monocobalt substituted sandwiched type structure which contains a cobalt 2,2’-bipyridine complex in the cationic part. Polyanion-1 shows intermolecular π-π stacking interaction between the phenanthroline ligand in the cationic part and one that is attached directly to the polyanion. The compounds are also characterized by FE-SEM analysis and the compound 3a shows ultra- smooth cuboids with grain size in the range of 1 to several micrometer though some very small irregular particles with the size of a few micrometer were also observed.

中文翻译：

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纳米团簇的合成与表征：杂原子上掺有双齿N-给体的无机-有机杂化铜和钴，具有亚砷酸钨酸盐（III）和孤对

在温和的反应条件下，合成了三个铜-钴的杂化纳米簇。所有化合物均已通过单晶X射线衍射，傅里叶变换红外光谱，紫外/可见光谱，热重分析和场发射扫描电子显微镜（FE-SEM）分析进行了表征。化合物[NaRb {Cu（phen）（H ₂ O）₂ Cl} ₂ ] [{Cu（phen）（H ₂ O）} ₂ {Cu（phen）（H ₂ O）Cl} ₂ {Cu ₂ As ₂ W ₁₉ O ₆₇（H ₂ O）] （1a）是带状区域中正方形平面环境中具有两个铜原子的夹心型Arsenotungungate。聚阴离子-1由四个铜菲咯啉配合物通过聚阴离子的末端氧原子修饰。此外，另外两个含钴的无机-有机杂化孤对与arsenotungstates（III）和1,10-菲咯啉[NaRbCo（phen）₃ ] [{Co（phen）（H ₂ O）₃ } CoAs ₂ W ₂₀ O ₆₇（H ₂ O）₃ ] （2a）和2,2'-联吡啶[Na ₃ RbCo（2,2-bipy）₃ ] [CoAs ₂ W ₂₀ O ₆₇（H ₂ O）₃ ] （3a）也已经在温和的条件下合成。聚阴离子（2）是单钴取代的夹心型结构，其由通过末端氧原子与聚阴离子连接的钴菲咯啉配合物修饰。同时，另一种配合物（3）也是单钴取代的夹心型结构，其在阳离子部分中包含钴2，2′-联吡啶配合物。聚阴离子-1显示出阳离子部分中的菲咯啉配体与直接连接到聚阴离子上的一种分子间π-π堆积相互作用。还通过FE-SEM分析和化合物3a对化合物进行了表征显示出超光滑的长方体，晶粒尺寸在1到几微米之间，尽管也观察到一些非常小的不规则颗粒，其尺寸为几微米。